Air cleaner



VEZ-Zta G.'P.,HEATH AIR CLEANER mea .my s1, 192s March 17, 1931 Patented Mar. 17, 1931 GLENN P. HEATH, GALESBUBG, ILLINOIS AIR CLEANER Application led July 31,

My invention relates primarily to devices for removing dust and other matters in suspension from a column of moving air, or gas.

One obj ect of my invention is the provision 5 of a device which is particularly adapted to insertion'in a conduit at a point where the conduit makes a bend.

Another object of my invention is to construct and arrange the parts of the device so that instead of retarding the movement of the fluid, either gas or air, its movement will be rather assisted in its passage around the bend in the conduit, while at the same time, providing a device which will remove all or nearly all of the dust or other particles carried by the moving column of fluid.

Another object of my invention/ is to pro vide a structure where in the event that the device is neglected and becomes incapable of further dust or particle collection, no interruption to the free flow of the Huid will be produced.

Another object of my invention is the provision of a structure comprising in part a cleaning unit which is easily removed or replaced when required and further, the provision of a structure which is simple in construction and arrangement, inexpensive to produce, and efficient in action.

Other objects of my invention will be described in the speciiication.

' The novelty of my invention will be hereinafter more fully set forth and specifically pointed out in the claims.

In the accompanying drawing:

Fig. 1 is a sectional side elevation of part of a conduit showing my cleaner installed' therein.

Fig. 2 is a sectional view of Fig.`1, taken about on the dotted line 2 2 and looking diagonally upward to the left.

Fig. 3 is a perspective detail of one form of screening element used in the device.

The same numerals of' reference are used to indicate identical partsin all the figures.

As illustrating one form of device embodying my invention, though without limiting myself to the precise details of construction and arrangement of parts shown and to be herein described, but availing myself of all 1929. serian No. 382,350.

changes and modifications that may be made within the scope of the appended claims, I have shown a device consisting of a housing 4 which is preferably arranged as a portion of an elbow7 in an air or other Huid conduit, 5 being that part of the conduit which delivers the air or Huid to the cleaner, and 6 being that part of the conduit which receives the air or iiuid from the cleaner. Within the housing 4 I support a frame work consisting of\a plurality of slotted members 7 mounted upon a pair of end members 8, this frame work being adapted to slide on rails 9 formed within the housing 4, access to the interior of the housing being gained through any suitable dgor l0 (Fig. 2). .Y

A curved screen l1 (Fig. 3) is inserted in each of the slotsfof the members 7, and as shown in the upper portion of Fig. 1 some or all of these screens may be provided with angular extensions 12.

As shown in Fi 3 the screens ll may be made of wire mes of any desirable size of wire or spacing, or these screens maybe made of sheet metal or other substance.

One use for the device would be to locate it in the cold air duct of a warm air furnace under which condition the section 5 of the duct would be the lower portion of the vertical or nearly vertical part thereof, while the .80 section 6 would be ai ort'ion of the horizontal part of the duct lea ing to the air admission passage of the furnace Jaclet.

Air, ducts as ordinarily constructed are usually joined at an angle and as the air flows through the duct there is a certain resistance set upl in the bend due to the tendency of the whole column of air to continue its downward movement. I

With the installation of my device, the downward moving column of air is, in a measure, divided into a number of thin horizontallyy arranged sheets, each of which isk directed around theV bend, thereby assisting 5 rather than retardingthe turning of the column of air and as this column turns, the tendency for any dust particles is to continue their linear movement and so come in contact with one or the other of the screens. 'l In practice it is advisable, after. all` the screens have been placed in the frame, to either dip or spray the frame and screens with a relatively non-volatile odorless fluid such as an oil to assist in catching and holding the dust particles as the air passes through the device.

By arranging the centers of the various radii of the slots for the screens on a line closer to the upper or entrance edges of the screens, it will be noted that the areas `between the screens are greater at their entrance edges than at the exit edges at the end of the curved portion and this construction slightly increases the speed of the movement of the air and the centrifugal force applied to the dust particles thereby more eectively removing them.

In the construction of the screens shownA in the upper left portion of Fig. 1 where the extensions 12 are shown, a slight deflection of the travel of the air is produced after the air has passed between the curved portions of the screens and this construction will result in separating the lightest dust particles which have moved through the device adjacent the convex side of any one of the screens.

It is obvious that all of the screens may be of the construction having the extension 12, or they maybe all of the construction without tlus extension,or they may be'alternatcly arranged as desired.

After the device has been in service a period of time and has collected a 'sufficient quantity of dust particles the door l0 of Fig. 2 may be opened and the frame and screens removed and then cleaned and replaced or alsubsttution may be made of a clean frame and screens for the one removed, after which this one may be cleaned and substituted at the next change.

It is to be noted from the above that my l cleaner is particularly adapted to be mounted at a point in the conduit Wherethere is a change in direction of the conduit; that my cleaner does not increase the frictional resistance to the Huid flow at this point, but rather assists the fluid in making the change of direction of movement; that the centrifugal force set up in the change of direction of movement is utilized to 'force the dust particles against one or the other of the removing screens; and that even after the screens have collected their full capacity of dust, there is no material restriction to the free How of the air through the device.

Having thus fully described my invention, I claim:

1. In a cleaner the combination of a conduit arranged at an angle, a housing at the angular portion of the conduit, a frame removably mounted in the casing, and screens carried by the frame.

2. In a cleaner the combination of a conduit, a housing forming part of the conduit,

l a frame removably mounted in the housing,

column of fluid.

GLENN P. HEATH.. 

